Mexico counts among the five countries with the highest biodiversity in the world. In the Yucatán Peninsula, there are aquatic ecosystems with a very special microbial diversity. These ecosystems are essential for the ecological equilibrium of the region, and are…

Esta investigación enfatiza la importancia del conocimiento matemático del profesorado para garantizar una educación matemática continua. Desde esta perspectiva de continuidad se explora el papel del docente de matemáticas en la transición de primaria a secundaria, un contexto especialmente adecuado…

This essay argues that intellectual historians have overlooked the significance of the return of Euclid’s geometric thought to early-modern Europe. Looking at the period between 1400 and 1800, this essay shows how geometric thought not only penetrated into fundamental areas…

Esta tesis presenta una particularización de la Gestión del Conocimiento Matemático al caso de la Topología Algebraica.
La Gestión del Conocimiento Matemático es una rama de las Ciencias de la Computación cuyo principal objetivo consiste en desarrollar asistentes para…

Nowadays large systems are viewed in terms of the services that they offer and the entities that interact to provide or consume these services. Open multi-agent systems, where agents can enter or leave the system, interact and dynamically form groups…

Software technology is creating a ubiquitous context for human living and learning in which new modes of interaction are gradually being incorporated. At the same time, interaction with Internet-based learning systems has evolved from using the traditional access from a…

Following a classical conception of Artificial Intelligence (one that aims a definition of cognitive mechanisms and their implementation in computers), this thesis explores the problem of knowledge organization. In particular, it draws attention to the linguistic and semantic memory, trying…

Total internal reflection microscopy (TIRM) measures the position of a Brownian particle above an interface by using its scattering of an evanescent wave. From the knowledge of the trajectory it is possible to reconstruct the interaction potential between the Brownian…

Dust is an ubiquitous inhabitant of the interstellar medium, and leaves an unmistakable signature in its optical properties, and physico-chemical evolution. Although there is little direct knowledge of the true nature of interstellar dust grains, strong evidences point toward the…

NAC proteins constitute one of the largest groups of plant-specific transcription factors and are known to play essential roles in various developmental processes. They are also important in plant responses to stresses such as drought, soil salinity, cold, and heat,…